21020403

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{9967}}^1$

素因数の和:10026

約数の個数: 16

約数和(自身を含む): 30302720

約数和(自身を除く): 9282317

約数列:

[1, 3, 19, 37, 57, 111, 703, 2109, 9967, 29901, 189373, 368779, 568119, 1106337, 7006801, 21020403]

約数ペア:

[(1, 21020403), (3, 7006801), (19, 1106337), (37, 568119), (57, 368779), (111, 189373), (703, 29901), (2109, 9967)]